The England coach saw Swansea thump Arsenal on Sunday.
"He (Capello) would have been surprised at the level they played at," Rodgers said. "The front three were a massive threat all afternoon.
"Nathan scored a terrific goal and it was a wonderful finish from Danny Graham, and I'm sure it gave him something to think about.
"The advantage we have is that our players play a style that if they stepped up to international level it would be no surprise to them.
"Players at unfashionable clubs are questioned technically, but they have proved they can play at that level."